A169898 Ordinary sum of {distinct numbers i in the range 1 <= i <= n such that there is a number j in the range 1 <= j <= n for which the carryless product i*j equals n}.

1, 3, 4, 7, 9, 16, 8, 31, 20, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 54, 22, 58, 24, 62, 26, 87, 28, 93, 30, 44, 52, 50, 48, 56, 54, 52, 60, 58, 56, 203, 72, 221, 80, 219, 78, 268, 76, 268, 84, 665, 52, 53, 108, 114, 784, 175, 178, 240, 240, 644, 150, 666, 144, 668, 148, 731, 152

Offset

1,2

Comments

Counted without multiplicity.

Links

Table of n, a(n) for n=1..67.

Index entries for sequences related to carryless arithmetic

Crossrefs

Cf. A000005, A169891-A169899.

Sequence in context: A158911 A086772 A301767 * A281734 A086336 A237258

Adjacent sequences: A169895 A169896 A169897 * A169899 A169900 A169901

Keyword

nonn,base

Author

David Applegate, Marc LeBrun and N. J. A. Sloane, Jul 11 2010

Status

approved